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20 Surfaces initiate from each of 20 points equally <br /> spaced <br /> along the ground surface between x = 60.0 ft <br /> and x = 120.0 ft <br /> Each surface terminates between x = 350.0 ft <br /> and x = 400. 0 ft <br /> Unless further limitations were imposed, the minimum <br /> elevation <br /> at which a surface extends is y = 4500.0 ft <br /> 7.0 ft line segments define each trial failure <br /> surface. <br /> --------------------- <br /> ANGULAR RESTRICTIONS <br /> --------------------- <br /> The first segment of each failure surface will be <br /> inclined <br /> within the angular range defined by <br /> Lower angular limit -45.0 degrees <br /> Upper angular limit -5.0 degrees <br /> Factors of safety have been calculated by the <br /> * * * * * SIMPLIFIED BISHOP METHOD * * * <br /> The most critical circular failure surface <br /> is specified by 47 coordinate points <br /> Point x-surf y-surf <br /> No. (ft) (ft) <br /> 1 66.32 4517 .00 <br /> 2 72.86 4514.52 <br /> 3 79.47 4512.22 <br /> 4 86. 15 4510. 12 <br /> 4 <br />